SCDS172A - JULY 2004 − REVISED DECEMBER 2004
TS3V340
QUAD SPDT HIGH BANDWIDTH VIDEO SWITCH
WITH LOW AND FLAT ON STATE RESISTANCE
description/ordering information (continued)
This device is fully specified for partial-power-down applications using I
off
. The I
off
feature ensures that
damaging current will not backflow through the device when it is powered down. This switch maintains isolation
during power off.
To ensure the high-impedance state during power up or power down, EN should be tied to V
CC
through a pullup
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
FUNCTION TABLE
INPUTS
EN
L
L
H
IN
L
H
X
INPUT/OUTPUT
D
S1
S2
Z
PIN DESCRIPTION
PIN NAME
S1, S2
D
IN
EN
DESCRIPTION
Analog video I/Os
Analog video I/Os
Select input
Switch-enable input
FUNCTION
D port = S1 port
D port = S2 port
Disconnect
2
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